Royal Physical Society, 261 



■eognata. Having fortunately obtained the eggs of E. subfulvata, from 

 a worn specimen captured at Duddingston, at the same time that Mr 

 Wilson kindly furnished me with those of E. eognata, I have no hesita- 

 tion in saying, from the results of a careful comparison of the larvae in all 

 their stages, that they are the same species, and feed on the same plant, 

 the common yarrow {Achillea Millefolium). With regard to the other 

 supposed variety, E. succenturiata, I can say nothing ; as I have not seen 

 the larva, which is said to feed on the seeds and flowers of Artemisia 

 maritima. Should it prove to be the same species, the last mentioned, 

 being Linnaeus' name, must be retained for the insect. 



In August and September many larvae of Eupithecia assimilata were 

 found at Duddingston, on black currant {Ribes nigrum). The insect 

 stands already in our list, and had been bred by Mr Wilson, under 

 the name of minutata ; but the latter species is said to feed upon heath, 

 and to frequent uncultivated localities, while the former is always found 

 in gardens. 



During the autumn of 1855, I received a few eggs of Ooremia olivata 

 from the neighbourhood of Loch Rannoch : they hatched shortly after I 

 received them, and the young larvae fed on the different species of Galium ; 

 passing the winter without feeding, and commencing again early in the 

 spring. The full-grown larvae were dingy brown in colour, and remark- 

 ably hispid, bearing no resemblance to Reaumur's " Arpenteuse qui vit 

 <Le feuilles de frene." About the same time, Mr Wilson obtained the 

 larvae of Coremia munitata from the egg ; but only one survived the 

 winter ; it resembled very closely the larva of C. montanata. 



Having likewise received fertile eggs of Erebia blandina from Rannoch, 

 I placed the young larvae in a glass cylinder, having the upper end covered 

 with a piece of muslin, and the lower end placed in a flower- pot contain- 

 ing several species of growing grasses, and exposed- the whole to the 

 weather in the garden. Here I had the satisfaction to perceive that the 

 young larvae throve apace ; and before the hard weather set in, they were 

 about three lines in length, of the usual form peculiar to the Satyr idi ; 

 and when resting, as they generally did, near the roots of the grasses, 

 they resembled the withered sheaths so closely as to be almost undis- 

 tinguishable. In this position, five of them survived the winter ; but the 

 last of these died on the 19th May 1856 ; and I have been still more 

 unsuccessful in a second attempt, which I was enabled to make last autumn 

 through the kindness of the Messrs Wilson. 



In April 1856, 1 received, from Perthshire, eggs of Petasia nubeculosa, 

 Brephos Partlienias, and Semioscopis Avellanella — all very interesting 

 species to the systematic entomologist, from the positions they appear to 

 occupy on the limits of the respective tribes to which they belong ; each 

 apparently possessing the characters of two of the principal divisions of 

 the Heterocerous Lepidoptera. These involved affinities are fully borne 

 out by the characters of the ova, which have been too much neglected as 

 •an aid to classification. Thus, the eggs of the Petasia are spherical, and 



